Vroxal Design — Flutter

A Flutter implementation of the Vroxal Design System, providing a complete set of design tokens, a 1,598-glyph icon library, and production-ready UI components that automatically adapt to light and dark mode.

Setup
Design Tokens
Icons
- VdIcon widget
- VdIcons catalog
Components
- Actions
- Displays
- Feedbacks
- Forms
Light / Dark Mode

Setup

1 · Add the dependency

# pubspec.yaml
dependencies:
  vroxaldesign:
    path: ../vd-flutter   # or your pub.dev / git reference

2 · Declare the Poppins font

The design system uses Poppins. Add the font files to your app's pubspec.yaml:

flutter:
  fonts:
    - family: Poppins
      fonts:
        - asset: fonts/Poppins-Regular.ttf
        - asset: fonts/Poppins-Medium.ttf
          weight: 500
        - asset: fonts/Poppins-SemiBold.ttf
          weight: 600
        - asset: fonts/Poppins-Italic.ttf
          style: italic

The icon font (VroxalIcon) is bundled inside the package — no extra declaration needed in your app.

3 · Apply the theme

Wrap your app with MaterialApp and set brightness so VdColorScheme.of(context) resolves correctly:

import 'package:flutter/material.dart';

MaterialApp(
  theme: ThemeData(brightness: Brightness.light),
  darkTheme: ThemeData(brightness: Brightness.dark),
  themeMode: ThemeMode.system,
  home: const MyHomePage(),
);

4 · Import the package

import 'package:vroxaldesign/vroxaldesign.dart';

Design Tokens

All tokens live in lib/src/tokens/ and are re-exported from the top-level barrel.

Colors

The color system uses a three-layer architecture:

Layer	Class	Visibility
1 · Raw palette	`_VdPalette`	private
2 · Brand aliases	`_VdBrand`	private
3 · Semantic scheme	`VdColorScheme`	public

Always consume VdColorScheme — never raw palette values.

final scheme = VdColorScheme.of(context);   // auto light/dark

Container(color: scheme.backgroundDefaultBase)
Text('Hello', style: TextStyle(color: scheme.contentDefaultBase))

Factory constructors

VdColorScheme.light()   // explicit light
VdColorScheme.dark()    // explicit dark
VdColorScheme.of(ctx)   // resolves from Theme.of(ctx).brightness

Semantic token groups (each available in light + dark):

Group	Example tokens
`backgroundDefault*`	Base · Secondary · Tertiary · Disabled
`backgroundPrimary*`	Base · Secondary · Tertiary
`backgroundNeutral*`	Base · Secondary · Tertiary
`backgroundSuccess*`	Base · Secondary · Tertiary
`backgroundError*`	Base · Secondary · Tertiary
`backgroundWarning*`	Base · Secondary · Tertiary
`backgroundInfo*`	Base · Secondary · Tertiary
`contentDefault*`	Base · Secondary · Tertiary · Disabled
`contentPrimary*`	Base · OnBase · OnSecondary
`contentNeutral*`	Base · OnBase · OnSecondary
`contentSuccess/Error/Warning/Info*`	Base · OnBase · OnSecondary
`borderDefault*`	Base · Secondary · Tertiary · Disabled
`borderPrimary/Neutral/Success/Error/Warning/Info*`	Base · Secondary · Tertiary

Typography

Font: Poppins — weights 400, 500, 600 + italic.

Text('Title', style: VdFont.titleLarge.textStyle)
Text('Body',  style: VdFont.bodyMedium.textStyle.copyWith(color: scheme.contentDefaultBase))

Available styles (via VdFont):

Token	Size	Weight
`displayLarge`	57 pt	SemiBold 600
`displayMedium`	45 pt	SemiBold 600
`displaySmall`	36 pt	SemiBold 600
`headlineLarge`	32 pt	SemiBold 600
`headlineMedium`	28 pt	SemiBold 600
`headlineSmall`	24 pt	SemiBold 600
`titleLarge`	22 pt	SemiBold 600
`titleMedium`	16 pt	SemiBold 600
`titleSmall`	14 pt	SemiBold 600
`labelLarge`	14 pt	Medium 500
`labelMedium`	12 pt	Medium 500
`labelSmall`	11 pt	Medium 500
`labelExtraSmall`	10 pt	Medium 500
`bodyExtraLarge`	18 pt	Regular 400
`bodyLarge`	16 pt	Regular 400
`bodyMedium`	14 pt	Regular 400
`bodyMediumItalic`	14 pt	Regular 400, italic
`bodySmall`	12 pt	Regular 400
`bodyExtraSmall`	10 pt	Regular 400

Spacing & Scale

Padding(padding: EdgeInsets.all(VdSpacing.s400))   // 16 pt
SizedBox(height: VdSpacing.s200)                    // 8 pt

Token	Value
`s0`	0 pt
`s50`	2 pt
`s100`	4 pt
`s200`	8 pt
`s300`	12 pt
`s400`	16 pt
`s600`	24 pt
`s800`	32 pt
`s1000`	40 pt
`s1200`	48 pt
`s1600`	64 pt
`s1800`	80 pt
`s2400`	96 pt
`s3000`	120 pt
`neg50 … neg600`	negative steps

Radius

BorderRadius.circular(VdRadius.md)   // 12 pt

Token	Value
`none`	0 pt
`xs`	4 pt
`sm`	8 pt
`md`	12 pt
`lg`	16 pt
`xl`	24 pt
`xxl`	32 pt
`xxxl`	40 pt
`full`	120 pt (pill / circle)

Border Width

Border.all(width: VdBorderWidth.sm)   // 1 pt

Token	Value
`none`	0 pt
`sm`	1 pt — default border
`md`	2 pt — focus ring
`lg`	4 pt
`xl`	8 pt

Icon Size

VdIcon(VdIcons.star, size: VdIconSize.md)   // 24 pt

Token	Value
`xs`	16 pt
`sm`	20 pt
`md`	24 pt ← default
`lg`	32 pt
`xl`	40 pt

Icons

VdIcon renders a glyph from the bundled VroxalIcon font (or any IconData). It respects the nearest IconTheme for size and color fallbacks.

VdIcon(VdIcons.check_circle_filled)
VdIcon(VdIcons.xmark, size: VdIconSize.sm, color: scheme.contentErrorBase)
VdIcon(VdIcons.magnifier, semanticLabel: 'Search')

Parameter	Type	Default
`icon`	`IconData`	required
`size`	`double?`	`IconTheme` size → `VdIconSize.md`
`color`	`Color?`	`IconTheme` color
`semanticLabel`	`String?`	—

Using inside a component with IconTheme propagation:

IconTheme.merge(
  data: IconThemeData(color: scheme.contentDefaultSecondary, size: VdIconSize.md),
  child: myIconWidget,   // Widget? — VdIcon or Icon() both work
)

VdIcons catalog

VdIcons exposes 1,598 icon constants generated from the Vroxal SVG library via fluttericon.com.

import 'package:vroxaldesign/vroxaldesign.dart';

VdIcons.check
VdIcons.xmark
VdIcons.chevron_down
VdIcons.chevron_up
VdIcons.chevron_left
VdIcons.chevron_right
VdIcons.info_circle_filled
VdIcons.check_circle_filled
VdIcons.danger_circle_filled
VdIcons.danger_triangle_filled
VdIcons.magnifier
VdIcons.minus
VdIcons.star
// … 1,585 more

All constants are static const IconData values using font family VroxalIcon with codepoints starting at 0xe800.

Components

All components are exported from package:vroxaldesign/vroxaldesign.dart.

Actions

VdButton

A full-featured button with multiple color variants and sizes.

VdButton('Save', onPressed: () {})
VdButton('Delete',
  color: VdButtonColor.error,
  size: VdButtonSize.small,
  onPressed: _handleDelete,
)
VdButton('Upload',
  leadingIcon: VdIcon(VdIcons.upload),
  isLoading: _uploading,
  onPressed: _upload,
)

Parameter	Type	Default
(positional) label	`String`	required
`color`	`VdButtonColor`	`.primary`
`size`	`VdButtonSize`	`.medium`
`style`	`VdButtonStyle`	`.filled`
`leadingIcon`	`Widget?`	—
`trailingIcon`	`Widget?`	—
`isLoading`	`bool`	`false`
`isDisabled`	`bool`	`false`
`onPressed`	`VoidCallback?`	—

Enums:

VdButtonColor — primary · neutral · success · error · warning · info
VdButtonSize — large · medium · small
VdButtonStyle — filled · outlined · transparent

VdIconButton

A square icon-only button.

VdIconButton(
  icon: VdIcon(VdIcons.xmark),
  onPressed: _close,
)
VdIconButton(
  icon: VdIcon(VdIcons.trash),
  color: VdIconButtonColor.error,
  style: VdIconButtonStyle.outlined,
  size: VdIconButtonSize.small,
  onPressed: _delete,
)

Parameter	Type	Default
`icon`	`Widget`	required
`color`	`VdIconButtonColor`	`.primary`
`size`	`VdIconButtonSize`	`.medium`
`style`	`VdIconButtonStyle`	`.filled`
`isDisabled`	`bool`	`false`
`onPressed`	`VoidCallback?`	—

VdChip

An inline tag / pill with an optional dismiss action.

VdChip('Design')
VdChip('Flutter', color: VdChipColor.primary, onRemove: _removeTag)
VdChip('Active', size: VdChipSize.small, leadingIcon: VdIcon(VdIcons.check))

Parameter	Type	Default
(positional) label	`String`	required
`color`	`VdChipColor`	`.neutral`
`size`	`VdChipSize`	`.medium`
`leadingIcon`	`Widget?`	—
`onRemove`	`VoidCallback?`	—

Displays

VdIcon / VdIcons

See the Icons section above.

VdBadge

A numeric or dot indicator for navigation items or avatars.

VdBadge(count: 3)
VdBadge(count: 99, maxCount: 99)
VdBadge.dot()                      // dot variant, no count

Parameter	Type	Default
`count`	`int?`	—
`maxCount`	`int`	`99`
`dot`	`bool`	`false`
`color`	`VdBadgeColor`	`.error`

VdDivider

A horizontal rule using semantic border tokens.

VdDivider()
VdDivider(color: VdDividerColor.strong)

Parameter	Type	Default
`color`	`VdDividerColor`	`.defaultColor`

Feedbacks

VdAlert

An inline contextual message banner.

VdAlert(description: 'Your changes have been saved.')

VdAlert(
  color: VdAlertColor.error,
  title: 'Upload failed',
  description: 'Please check your connection and try again.',
  closable: true,
  onClose: () {},
)

VdAlert(
  color: VdAlertColor.warning,
  description: 'This action cannot be undone.',
  action: 'Learn more',
  actionInline: true,
  onAction: _openDocs,
)

Parameter	Type	Default
`color`	`VdAlertColor`	`.primary`
`icon`	`Widget?`	color-mapped icon
`title`	`String?`	—
`description`	`String`	required
`action`	`String?`	—
`actionInline`	`bool`	`false`
`closable`	`bool`	`false`
`onAction`	`VoidCallback?`	—
`onClose`	`VoidCallback?`	—

VdAlertColor — primary · neutral · success · error · warning · info

VdEmptyState

A full zero-state layout with icon, title, description, and optional actions.

VdEmptyState(
  title: 'Nothing here yet',
  description: 'Add your first item to get started.',
)

VdEmptyState(
  boxed: true,
  icon: VdIcon(VdIcons.folder_open, size: VdIconSize.xl),
  title: 'No documents',
  description: 'Upload a file or create a new document.',
  primaryActionTitle: 'New document',
  secondaryActionTitle: 'Upload',
  onPrimaryAction: _createDoc,
  onSecondaryAction: _upload,
)

Parameter	Type	Default
`title`	`String`	`'Title goes here'`
`description`	`String`	placeholder text
`icon`	`Widget?`	`VdIcons.info_circle_filled`
`boxed`	`bool`	`true`
`primaryActionTitle`	`String?`	—
`secondaryActionTitle`	`String?`	—
`onPrimaryAction`	`VoidCallback?`	—
`onSecondaryAction`	`VoidCallback?`	—

Max content width: 640 pt. Max text block width: 480 pt.

VdLoadingState

A centered loading spinner with optional title and description.

VdLoadingState()
VdLoadingState(title: 'Loading…', description: 'Please wait while we fetch your data.')
VdLoadingState(boxed: false)

Parameter	Type	Default
`title`	`String?`	—
`description`	`String?`	—
`boxed`	`bool`	`true`

VdSnackbar

A transient message bar shown at the bottom of the screen.

// Show programmatically:
VdSnackbarController.show(
  context,
  VdSnackbar(
    message: 'Item deleted',
    color: VdSnackbarColor.neutral,
    action: 'Undo',
    onAction: _undo,
  ),
);

Parameter	Type	Default
`message`	`String`	required
`color`	`VdSnackbarColor`	`.neutral`
`action`	`String?`	—
`closable`	`bool`	`false`
`onAction`	`VoidCallback?`	—
`onClose`	`VoidCallback?`	—

VdSnackbarColor — primary · neutral · success · error · warning · info

Forms

All form inputs share a common set of states via VdInputState:

enum VdInputState { normal, focus, disabled, error, success, warning }

Every input shows an optional label, helperText, isOptional badge, and a color-coded status icon driven by the active state.

VdTextField

A single-line text input.

final _ctrl = TextEditingController();

VdTextField(
  controller: _ctrl,
  label: 'Email',
  placeholder: 'you@example.com',
  helperText: 'We will never share your email.',
  leadingIcon: VdIcon(VdIcons.mail),
)

VdTextField(
  controller: _ctrl,
  label: 'Password',
  isPassword: true,
  state: VdInputState.error,
  helperText: 'Must be at least 8 characters.',
)

Parameter	Type	Default
`controller`	`TextEditingController`	required
`label`	`String?`	—
`placeholder`	`String`	`'Placeholder'`
`helperText`	`String?`	—
`isOptional`	`bool`	`false`
`isPassword`	`bool`	`false`
`leadingIcon`	`Widget?`	—
`trailingIcon`	`Widget?`	—
`onTrailingAction`	`VoidCallback?`	—
`characterLimit`	`int?`	—
`state`	`VdInputState`	`.normal`
`onChanged`	`ValueChanged<String>?`	—

VdTextArea

A multi-line text input (min 4 lines, max 9 lines then scrollable).

final _notes = TextEditingController();

VdTextArea(
  controller: _notes,
  label: 'Notes',
  placeholder: 'Enter your notes…',
  characterLimit: 500,
)

Same parameters as VdTextField except isPassword is not available.

VdSelectField

A tap-to-open dropdown backed by a bottom-sheet picker.

String? _country;

VdSelectField<String>(
  label: 'Country',
  selection: _country,
  options: ['Australia', 'Canada', 'New Zealand', 'United States'],
  onChanged: (v) => setState(() => _country = v),
)

// Custom display label:
VdSelectField<MyEnum>(
  selection: _pick,
  options: MyEnum.values,
  optionLabel: (e) => e.displayName,
  onChanged: (v) => setState(() => _pick = v),
)

Parameter	Type	Default
`selection`	`T?`	required
`options`	`List<T>`	required
`optionLabel`	`String Function(T)?`	`toString()`
`label`	`String?`	—
`placeholder`	`String`	`'Select an option'`
`helperText`	`String?`	—
`isOptional`	`bool`	`false`
`leadingIcon`	`Widget?`	—
`state`	`VdInputState`	`.normal`
`onChanged`	`ValueChanged<T?>?`	—

VdDateTimeField

A tap-to-open date/time picker field.

DateTime? _start;

VdDateTimeField(
  'Start Date',
  selection: _start,
  mode: VdDateTimeFieldMode.date,
  onChanged: (d) => setState(() => _start = d),
)

VdDateTimeField(
  'Meeting Time',
  selection: _time,
  mode: VdDateTimeFieldMode.time,
  onChanged: (d) => setState(() => _time = d),
)

Parameter	Type	Default
(positional) label	`String`	required
`selection`	`DateTime?`	required
`mode`	`VdDateTimeFieldMode`	`.dateTime`
`placeholder`	`String`	`'Placeholder'`
`state`	`VdInputState`	`.normal`
`isOptional`	`bool`	`false`
`minimumDate`	`DateTime?`	`DateTime(1900)`
`maximumDate`	`DateTime?`	`DateTime(2100)`
`leadingIcon`	`Widget?`	—
`trailingIcon`	`Widget?`	—
`onTrailingAction`	`VoidCallback?`	—
`helperText`	`String?`	—
`onChanged`	`ValueChanged<DateTime?>?`	—

VdDateTimeFieldMode — date · time · dateTime

VdSearchField

A search bar with a built-in search icon and a clear button.

final _search = TextEditingController();

VdSearchField(controller: _search, placeholder: 'Search products…')

Parameter	Type	Default
`controller`	`TextEditingController`	required
`placeholder`	`String`	`'Search'`
`state`	`VdInputState`	`.normal`
`onChanged`	`ValueChanged<String>?`	—

VdCheckbox

A labeled checkbox with tri-state support (checked · unchecked · indeterminate).

VdCheckbox(
  label: 'Accept terms',
  value: _accepted,
  onChanged: (v) => setState(() => _accepted = v ?? false),
)

// Indeterminate (select-all parent):
VdCheckbox(
  label: 'Select all',
  value: null,   // null = indeterminate
  tristate: true,
  onChanged: _toggleAll,
)

Parameter	Type	Default
`label`	`String`	required
`value`	`bool?`	required
`tristate`	`bool`	`false`
`state`	`VdInputState`	`.normal`
`onChanged`	`ValueChanged<bool?>?`	—

VdRadioButton / VdRadioGroup

Radio options scoped to a shared group value.

String? _plan;

VdRadioGroup<String>(
  value: _plan,
  onChanged: (v) => setState(() => _plan = v),
  child: Column(
    children: [
      VdRadioOption(value: 'free',  label: 'Free'),
      VdRadioOption(value: 'pro',   label: 'Pro'),
      VdRadioOption(value: 'team',  label: 'Team'),
    ],
  ),
)

`VdRadioGroup`	Type	Default
`value`	`T?`	required
`onChanged`	`ValueChanged<T?>?`	—
`child`	`Widget`	required

`VdRadioOption`	Type	Default
`value`	`T`	required
`label`	`String`	required
`state`	`VdInputState`	`.normal`

VdSelectionCard / VdSelectionCardGroup

Large tap-target selection cards, typically used for plan or feature selection.

String? _tier;

VdSelectionCardGroup<String>(
  value: _tier,
  onChanged: (v) => setState(() => _tier = v),
  child: Column(
    children: [
      VdSelectionCardOption(
        value: 'starter',
        title: 'Starter',
        description: 'Up to 3 projects',
        leadingIcon: VdIcon(VdIcons.lightning_bolt),
      ),
      VdSelectionCardOption(
        value: 'growth',
        title: 'Growth',
        description: 'Unlimited projects + analytics',
        leadingIcon: VdIcon(VdIcons.chart_line),
      ),
    ],
  ),
)

VdCodeInput

A PIN / OTP code entry field with configurable digit count.

VdCodeInput(
  length: 6,
  onCompleted: (code) => _verify(code),
)

Parameter	Type	Default
`length`	`int`	`4`
`state`	`VdInputState`	`.normal`
`onCompleted`	`ValueChanged<String>?`	—
`onChanged`	`ValueChanged<String>?`	—

Light / Dark Mode

VdColorScheme.of(context) reads Theme.of(context).brightness. Components pick up the correct palette automatically — no extra work needed.

// Force light in a specific subtree:
Theme(
  data: ThemeData(brightness: Brightness.light),
  child: VdAlert(description: 'Always light'),
)

All token-level color choices (background, content, border) flip consistently between light and dark. There are no hard-coded Color literals in any component.